Wouldn't it have been more useful/conclusive if the study had another control group or two with non-AI based assistance (access to math books, access to calculator, access to human experts, etc)?
Human experts would be the best equivalent, especially if that person is great at confidently explaining things (no matter of correct or incorrect).
This is exactly the reason the studios garbage, and was clearly tailored to prove a point and sell books. He literally should have asked got5 or Claude how to design a useful study of the problem.
FWIW, well designed study probably would still support his premise. He at least needed a group with no help, a group with no help but books and a calculator (tools), a group with human assistance, and a group with AI assistance, and a group that does an unrelated activity during the priming period.